WELL · 42-461-35545 · DISTRICT 7
Peck A #4
Upton County · Spraberry (Trend Area) field · Vertical
Peck A #4 (API 42-461-35545) is a plugged well in Upton County, plugged September 28, 2011, last operated by Diamondback E&P LLC.
The RRC has issued one drilling permit (amended once), issued November 2, 2007, permitted to 12,000 ft.
It was permitted by Lcx Energy, LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its lease has reported 413K barrels of oil and 2.26M mcf of gas since November 2006, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by LCX Energy, LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,231 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | LCX Energy, LLCSep 17, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 2
- permits on file
- Sep 17, 2008
- last permit issued
- May 4, 2008
- completed
- 413K
- cumulative oil, bbl
- 2.26M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2006 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 4, 2008
- Shut in
- —
- Plugged
- Sep 28, 2011
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Peck "A" O-9-16097 | Spraberry (Trend Area) | Diamondback E&P LLC | 8 | 413K | 2.26M | Nov 2006 – Jul 2026 |
Oil, barrels lease total
Last 12 months 4,665 · prior 12 9,457(-51%)
Gas, mcf lease total
Last 12 months 19,940 · prior 12 21,714(-8%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1LCX Energy, LLCNov 2006 → Sep 2009
- 2Endeavor Energy Resources L.P.Oct 2009 → Dec 2024
- 3Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 648168-98 | Drill | LCX Energy, LLC | Jul 21, 2008 | Sep 17, 2008 | Dec 6, 2007 | 12,000 |
| 648168-99 | Drill | LCX Energy, LLC | Oct 22, 2007 | Nov 2, 2007 | Dec 6, 2007 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-16097 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,897 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,389 | 10,709 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 356 | 17.5 | 350 S |
| 8.625 | 505 | 11 | 700 S |
| 4.5 | 10,914 | 7.875 | 1,525 S |
| 4.5 | — | 7.875 | 1,400 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Nov 24, 2009 | Jun 19, 2008 | Yes |
| 00 | Sep 21, 2009 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-461-35545 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-35545 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/46135545, documented in the API reference.